What it does
DMarket is a smaller marketplace that's notable for having a real developer API (read endpoints public, write endpoints HMAC-authed). Useful for arbitrage scanners and analytical tools.
Volume is meaningfully lower than CSFloat or Buff, so it's more relevant as a price-feed source than as a primary trading destination.
Pros & cons
Pros
- Public read API (no key needed)
- HMAC write API for automated trading
- Includes non-CS2 items if you trade across games
Caveats
- Lower volume than CSFloat or Buff
- Listing depth varies by item